Spatial Relationships
Identity
Ontology
Geometries
Properties
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Is the place named 中の瀬戸 (naka no seto → strait of the middle) a real strait? In which case we could split the island into the western and eastern parts.
2020-11 : Current Boundary contains : East Ongul Island (Q6980722) and West Ongul Island (Q11627060)
island
Q3366957
Names